<u>Mary Maverick's memoirs are a great source of information about the daily life of Texas resident sin the civil war era</u> and the situation of the population that lived can be found in the daily recordings of the lifestyle by Maverick.
<u>She was one of the early pioneers of the memoir form which becomes a very important historical document</u> of the everyday life of the common people from a past time in the history of the place one needs to study.
The answer (depending on your spreadsheet) is =sum() if there is an order to your summation. For example if there are numbers from a1 to a100 and you want the total you would use =sum(a1:a100)